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Family Practice

Melissa Arguello Belli, MD

Works at hospitals in Hillsboro, OR · Oregon

Summary

Dr. Melissa Arguello Belli, MD is a family doctor at 1151 N Adair St, Cornelius, OR 97113. Phone: (503) 359-5564. Accepts Medicare assignment. In 2024, Melissa Arguello Belli had 25 Original Medicare patients and 56 services. NPI 1982649794. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Family doctor (Medicare lists Family Practice)
  • Address: 1151 N Adair St, Cornelius, OR 97113 · Directions (1 more location)
  • Phone: (503) 359‑5564
  • Medicare: Accepts Medicare assignment
  • Hospital: Hillsboro Medical Center
  • Group practice: Virginia Garcia Memorial Health Center
  • Medical school: graduated 1999 (27 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Melissa Arguello Belli, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Melissa Arguello Belli accept Medicare assignment?
Yes. Medicare's clinician data says Melissa Arguello Belli accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Melissa Arguello Belli see?
In 2024, CMS data shows 25 Original Medicare patients and 56 services for Melissa Arguello Belli. This counts Original Medicare only and measures volume, not quality.
What is Melissa Arguello Belli's NPI number?
1982649794. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Melissa Arguello Belli, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients25
Services billed to Medicare56
Different services or procedures8
Participating Medicare providerYes
Average age of these patients69

Most frequent services

  1. Hemoglobin a1c level (83036)28 services
  2. Blood test, lipids (cholesterol and triglycerides) (80061)12 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High cholesterol52%
  • Diabetes52%
  • High blood pressure48%

Hospitals where Melissa Arguello Belli works

Medicare's Facility Affiliation Data lists Melissa Arguello Belli at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Melissa Arguello Belli is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Melissa Arguello Belli as a member of this group (CMS data updated October 2, 2026).

  • Virginia Garcia Memorial Health Center87 clinicians in the group

Specialties

Find other Family Practice doctors in Oregon →

Other family doctors in Cornelius

Clinicians with the same Medicare primary specialty in Cornelius, OR — not a recommendation.

All family doctors in Cornelius →

Other clinicians in Virginia Garcia Memorial Health Center

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Graduation year1999 (27 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1982649794
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians